Turn before passing
Turn the solid to the named approach, then choose its opening.
Turn 90° around the vertical axis so the original right side becomes the approach side.
Turn before passing
Turn the solid to the named approach, then choose its opening.
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First lesson in this subject: Turn a shape, don’t flip it
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First lesson in this subject: Turn a shape, don’t flip it
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What next?
- Match the opening
Practice · Turn a stepped solid to fit an opening, then check its full outline.
- Spatial
Book · Follow shapes through turns, folds, reflections, and different points of view.
- Project the whole solid
Previous lesson · Combine every depth layer before choosing an opening.
- Reflect across a line
Next lesson · Use equal distances to find a shape’s mirror image.